How to change placeholder key of rendering using PowerShell script in Sitecore?

Updating bulk content items manually might not be the best practice when dealing with bulk items.

This blog will help you update the placeholder key of renderings using the PowerShell script more efficiently. The following code snippet will be used to change the placeholder key of the rendering to the page programmatically using the PowerShell script.

This code should work with any version of Sitecore. 

Open - Development Tools -> PowerShell ISE and paste the following code.

Modify the paths and fields according to your template fields.

Update the placeholder key of the rendering on the existing page

PowerShell script code:    

$masterdatabase = "master"
$rootItem = Get-Item -Path (@{$true="$($masterdatabase):\sitecore\content\ArticleName\2023"; $false="$($masterdatabase):\content"}[(Test-Path -Path "$($masterdatabase):\sitecore\content\Home")])

$defaultLayout = Get-LayoutDevice "Default"
# Toggle for whether to update Shared or Final Layout
$useFinalLayout = $True
# If set to true, the script will only list the renderings that need fixing, rather than fixing them.
$reportOnly = $False
foreach ( $item in Get-ChildItem -Item $rootItem -Recurse )
{
    # Only interested in items that have a layout
    
    if (Get-Layout $item)
    {
      $itemTemplate = [Sitecore.Data.Managers.TemplateManager]::GetTemplate($item)
      if($itemTemplate.ID -eq "{HJUIUOOOL-4B42-4AD9-94F9-JKU78JJHH}")
      {
           
            $renderings =  Get-Rendering -Item $item -FinalLayout
            #Write-Host "$($item.FullPath) -($renderings)"
            foreach ( $rendering in $renderings )
            {
                # Only update the rendering if we're not in "Report Only" mode
                if (!$reportOnly)
                {
                    if($rendering.Placeholder -eq "sideBar")
                    {
                        $rendering.Placeholder = $rendering.Placeholder -replace "sideBar", "jss-article-sidebar"
                        Set-Rendering -Item $item -Instance $rendering -FinalLayout:$useFinalLayout
                        Write-Host "$($item.FullPath) - Rendering $($rendering.UniqueID) - Placeholder: $("sideBar") --> $("jss-article-sidebar")"
                    }
                    if($rendering.Placeholder -eq "main")
                    {
                        $rendering.Placeholder = $rendering.Placeholder -replace "main", "jss-main"
                        Set-Rendering -Item $item -Instance $rendering -FinalLayout:$useFinalLayout
                        Write-Host "$($item.FullPath) - Rendering $($rendering.UniqueID) - Placeholder: $("main") --> $("jss-main")"
                    }
                    if($rendering.Placeholder -eq "header")
                    {
                        $rendering.Placeholder = $rendering.Placeholder -replace "header", "jss-header"
                        Set-Rendering -Item $item -Instance $rendering -FinalLayout:$useFinalLayout
                        Write-Host "$($item.FullPath) - Rendering $($rendering.UniqueID) - Placeholder: $("header") --> $("jss-header")"
                    }
                    if($rendering.Placeholder -eq "footer")
                    {
                        $rendering.Placeholder = $rendering.Placeholder -replace "footer", "jss-footer"
                        Set-Rendering -Item $item -Instance $rendering -FinalLayout:$useFinalLayout
                        Write-Host "$($item.FullPath) - Rendering $($rendering.UniqueID) - Placeholder: $("footer") --> $("jss-footer")"
                    }
                }
            }
        }
    }
}